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Redeemable Stocks of Subsidiaries (Notes) | 9 Months Ended
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Sep. 30, 2018
Redeemable Stock of Subsidiaries [Abstract] |
Redeemable Noncontrolling Interest [Table Text Block] | REDEEMABLE STOCK OF SUBSIDIARIES The following table summarizes the Company’s redeemable stock of subsidiaries balances as of the periods indicated (in millions):
| September 30, 2018 |  | December 31, 2017
IPALCO common stock | $ | 618 |  |  | $ | 618 |
Colon quotas (1) | 201 |  |  | 159 |
IPL preferred stock | 60 |  |  | 60 |
Total redeemable stock of subsidiaries | $ | 879 |  |  | $ | 837 |
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(1) | Characteristics of quotas are similar to common stock.
Colon — Our partner in Colon made capital contributions of $34 million and $30 million during the nine months ended September 30, 2018 and 2017, respectively. Any subsequent adjustments to allocate earnings and dividends to our partner, or measure the investment at fair value, will be classified as temporary equity each reporting period as it is probable that the shares will become redeemable.

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- Definition Redeemable Stock of Subsidiaries [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of redeemable noncontrolling interest (as defined) included in the statement of financial position as either a liability or temporary equity. As of the date of the statement of financial position, such redeemable noncontrolling interest is currently redeemable, as defined, for cash or other assets of the entity at (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the entity. + References No definition available. + Details
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